View la9251m datasheet:

Ordering number : ENN6125 Monolithic Linear IC LA9251M CD Player Analog Signal Processor (ASP) • Built-in EF balance adjustment Overview • Built-in RF level AGC function The LA9251M is a servo signal-processing IC for CD • RF level follower function for the tracking servo gain players. In combination with a CD DSP such as the (with turn-off function) LC78626KE, it can implement a CD player with a minimal number of external components. Package Dimensions Functions unit: mm • I/V amplifier 3159-QIP64E • SLC [LA9251M] • FE 17.2 • Focus servo amplifier 1.6 14.0 • Spindle servo amplifier (with gain switching function) 1.0 0.8 0.35 1.0 0.15 33 • Focus detection (DRF and FZD) 48 32 • Defect detection 49 • RF amplifier with AGC • APC • TE (with variable gain and